{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "38838",
    "entityType": "User",
    "nonce": "0x1c41da369897a367901465f1c8d9cffb425958db2699b15c355e4f5d99de9dda",
    "signature": "0x2639852da2ad2becac28ddaaa315a40af55deb2dd7161149fe98a1853ff18e5f224e76aac65e6f3ad1a438f586f153ac586a57ebf9e2889654e2641556a4f4fa1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}